| A | B |
|---|
| ecosystem | a place where living and nonliving things interact |
| wetlands | swamps, bogs, and marshes |
| migrate | to travel to a warmer place where an animal can find food |
| hibernation | when an animal goes into a deep sleep during winter |
| dormancy | a decrease in plant activity in the winter |
| desert | an environment with little water and is usually hot during the day |
| prairie | an environment made up of many grasses that is home to buffalo |
| beaver | an animal that changes the environment by building dams |
